Question

1. What are the different ways in which the velocity of a body can be
changed?
2. Define the work is done? Give two examples.
3. Write the first and second equation of motion.​

Answer 1

1)An object can change velocity in a number of ways: it can slow down, it can speed up, or it can change direction. A change in speed, or a change in direction, or a change in both speed and direction means that the object has a change in velocity

2)Work is said to be done when a body or object moves with the application of external force. We can define work as an activity involving a movement and force in the direction of the force. For example, a force of 30 newtons (N) pushing an object 3 meters in the same direction of the force will do 90 joules (J) of work

3)First Equation of Motion : v=u+at. Second Equation of Motion : s=ut+\frac{1}{2}at^2.

Answer 2

Explanation:

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